Home / 3,900.11-5,382.14-2,328.21

Finding the Fourth Proportional to 3,900.11, 5,382.14 and 2,328.21

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Solution

The fourth proportional to 3,900.11, 5,382.14 and 2,328.21 is: 3,212.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.11 : 5,382.14 = 2,328.21 : x
  2. Step 2: Convert to fraction form
    3,900.11/5,382.14 = 2,328.21/x
  3. Step 3: Cross multiply
    3,900.11x = 5,382.14 × 2,328.21
  4. Step 4: Simplify right side
    3,900.11x = 12,530,740.53
  5. Step 5: Solve for x
    x = 12,530,740.53/3,900.11
  6. Step 6: Final answer
    x = 3,212.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.